On the identity of Labronema plica Ciobanu, Popovici & Decraemer, 2004 and proposal for its transfer to the genus Thonus Thorne, 1974 (Nematoda: Dorylaimoidea)
On the identity of Labronema plica Ciobanu, Popovici & Decraemer, 2004 and proposal for its transfer to the genus Thonus Thorne, 1974 (Nematoda: Dorylaimoidea)
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关于 Labronema plica Ciobanu 的身份，Popovici
DOI：
10.1163/156854108784513888
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
R. Peña‐Santiago
中科院分区：
文献类型：
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作者：
M. Ciobanu;W. Decraemer;I. Popovici;R. Peña‐Santiago
线虫学，2008，卷。 10(4), 599-602 简短通讯 关于 Labronema plica Ciobanu 的身份，Popovici & Decraemer，2004 年以及将其转移到 Thonus Thorne 属的建议，1974 （线虫纲：Dorylaimoidea） Marcel C IOBANU 1 , 2 , * , Iuliana P O POVI C I 1 , Wilfrida D ECRAEMER 3 , 4 和 Reyes P ENA -S ANTIAGO 2 在对 Thonus Thorne 属的一些物种进行修订期间，1974 年，并分析了该属与其近缘种的关系，包括 Crassolabium Yeates，1967 年、Labronema Thorne，1939 年和 Takamangai Yeates，1967 年（参见 Pena-Santiago） & Ciobanu, 2007a, b)，重新检查了几个身份或分类有问题的物种，试图建立更稳健的诊断特征来区分相关的分类群。 Labronema plica Ciobanu, Popovici & Decraemer, 2004，在罗马尼亚受盐影响的地区描述的，是一个有趣的物种，因为它的一般形态也符合 Thonus 模式。模式材料（女性正模、一种女性副模和唯一的男性副模）以及同样来自模式产地的一个新标本（一名年轻雌性）可供研究。他们的研究提供了额外的数据来澄清其身份。对Labronema plica型材料的重新检查（图1）表明雌性具有以下形态：唇部区域明显凹陷，相对较高且呈帽状，即其内部明显升高。嘴唇基本上合并在一起。口口在后半部明显加宽。导向环简单、复杂。两个前腹下侧咽腺核之一缺失或模糊。咽基部和贲门之间的连接处被非常浅的环形结构包围。生殖道分化差：输卵管长110-115微米或相应体直径2.4-2.5倍。 1 Institute of Biological Research, Department of Plant and Animal Taxonomy and Ecology, 48 Republicii Str., RO-400015 Cluj-Napoca,罗马尼亚 2 Departamento de Biologia Animal, Vegetal y Ecologia, Universidad de Jaen, Campus ‘Las Lagunillas’ s/n, Edificio B3, 23071-Jaen, Spain 3 比利时皇家自然科学研究所， Vautierstraat 29, B-1000 布鲁塞尔, 比利时 4 根特大学 (UGent) 生物学系, Ledeganckstraat 35, B-9000 根特, 比利时 * 通讯作者, 电子邮件: icb@cluj.astral.ro 收稿日期: 2007 年 12 月 4 日;修订日期：2008 年 1 月 16 日 接受出版：2008 年 1 月 16 日 关键词：诊断、新组合、罗马尼亚、分类学、Thonus plica n。梳子。长，有小，或多或少呈球形，扩张部；输卵管-子宫连接处有明显的括约肌标记；子宫 一个简单的管子，长 100-115 µm 或相应的体直径 2.2-2.5。阴道近端部长大于宽，壁略呈乙状，周围肌肉组织较弱。在纵向光学切片中，阴道部有两个分离的三角形硬化片。阴道远端短，缺乏任何分化。外阴毛孔状。两个发达的腺细胞，一个在前部，另一个在后部，存在于阴道-外阴交界处附近。尾孔由两对近末端孔组成，一对位于侧孔，一对位于背侧孔。雄性尾巴腹侧比雌性更直。该物种的特征是中等大小（L=1.31-1.38毫米），唇部呈帽状，直径13.0-13.5微米，齿柱长11-12微米，孔径约占总长度的五分之二，导向环简单（但有褶皱），颈部长287-312微米，咽部分扩张长 110-127 µm 或总颈部长度的 38-40%，阴道部光学切片有两块分开的部分，外阴孔状且几乎赤道 (V = 50-53)，存在外阴前后角质层皱纹，阴道-外阴交界处附近存在腺细胞，尾部圆锥形圆形 (25-26 µm；c = 52-53；c ′ = 0.7)，雄性有 16 个连续的泄殖腔前中腹附加物和长 53 µm 的骨针。 © Koninklijke Brill NV，莱顿，2008 599 也可在线获取 - www.brill.nl/nemy
Nematology , 2008, Vol. 10(4), 599-602 Short communication On the identity of Labronema plica Ciobanu, Popovici & Decraemer, 2004 and proposal for its transfer to the genus Thonus Thorne, 1974 (Nematoda: Dorylaimoidea) Marcel C IOBANU 1 , 2 , ∗ , Iuliana P O P OVI C I 1 , Wilfrida D ECRAEMER 3 , 4 and Reyes P ENA -S ANTIAGO 2 During a revision of a number of species belonging to the genus Thonus Thorne, 1974 and analysis of the rela- tionships of this genus with its relatives, including Cras- solabium Yeates, 1967, Labronema Thorne, 1939 and Takamangai Yeates, 1967 (see Pena-Santiago & Ciobanu, 2007a, b), several species with problematical identity or taxonomy were re-examined to try to establish more ro- bust diagnostic features to separate the taxa concerned. Labronema plica Ciobanu, Popovici & Decraemer, 2004, described from a salt-affected area in Romania, is an in- teresting species as its general morphology also fits the Thonus pattern. Type material (female holotype, one fe- male paratype and the only male paratype) were available to study, as well as one new specimen (a young female), also from the type locality. Their study provided addi- tional data to clarify its identity. Re-examination of Labronema plica type material (Fig. 1) showed that the female had the following mor- phology: lip region offset by marked depression, rela- tively high and cap-like, i.e. , with its inner portion dis- tinctly elevated. Lips largely amalgamated. Cheilostom distinctly widened in posterior half. Guiding ring simple, plicate. One of two anterior ventrosublateral pharyngeal gland nuclei lacking or obscure. Junction between pha- ryngeal base and cardia enveloped by a very shallow, ring- like, structure. Genital tract poorly differentiated: oviduct 110-115 µ m long or 2.4-2.5 corresponding body diam. 1 Institute of Biological Research, Department of Plant and Animal Taxonomy and Ecology, 48 Republicii Str., RO-400015 Cluj-Napoca, Romania 2 Departamento de Biologia Animal, Vegetal y Ecologia, Universidad de Jaen, Campus ‘Las Lagunillas’ s/n, Edificio B3, 23071-Jaen, Spain 3 Royal Belgian Institute of Natural Sciences, Vautierstraat 29, B-1000 Brussels, Belgium 4 University of Ghent (UGent) Department of Biology, Ledeganckstraat 35, B-9000 Ghent, Belgium ∗ Corresponding author, e-mail: icb@cluj.astral.ro Received: 4 December 2007; revised: 16 January 2008 Accepted for publication: 16 January 2008 Keywords: diagnosis, new combination, Romania, taxonomy, Thonus plica n. comb. long, with small, more or less spheroid, pars dilatata ; dis- tinct sphincter marking oviduct-uterus junction; uterus a simple tube 100-115 µ m long or 2.2-2.5 corresponding body diam. Pars proximalis vaginae longer than wide, with slightly sigmoid walls, surrounded by weak mus- culature. Pars refringens vaginae with two separated, tri- angular sclerotised pieces in longitudinal optical section. Pars distalis vaginae short, lacking any differentiation. Vulva pore-like. Two developed gland cells, one anterior, other posterior, present near vagina-vulva junction. Cau- dal pores comprising two subterminal pairs, one lateral, one subdorsal. Male tail straighter ventrally than that of female. This species is characterised by its medium size (L = 1.31-1.38 mm), lip region cap-like and 13.0-13.5 µ m diam., odontostyle 11-12 µ m long with aperture occupy- ing ca two-fifths of total length, guiding ring simple (but plicate), neck 287-312 µ m long, expanded part of pha- rynx 110-127 µ m long or 38-40% of total neck length, pars refringens vaginae with two separated pieces in op- tical section, vulva pore-like and almost equatorial (V = 50-53), presence of pre- and post-advulvar cuticular wrin- kles, presence of gland cells near vagina-vulva junction, tail conoid-rounded (25-26 µ m; c = 52-53; c ′ = 0.7), and male with 16 contiguous precloacal mid-ventral supple- ments and spicules 53 µ m long. © Koninklijke Brill NV, Leiden, 2008 599 Also available online - www.brill.nl/nemy